lubridate v0.2.5
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Make dealing with dates a little easier
Lubridate makes it easier to work with dates and times by
providing functions to identify and parse date-time data,
extract and modify components of a date-time (years, months,
days, hours, minutes, and seconds), perform accurate math on
date-times, handle time zones and Daylight Savings Time.
Lubridate has a consistent, memorable syntax, that makes
working with dates fun instead of frustrating.
Functions in lubridate
| Name | Description | |
| is.POSIXt | Is x a POSIXct or POSIXlt object? | |
| week | Get/set weeks component of a date-time. | |
| yday | Get/set days component of a date-time. | |
| ms | Create a period with the specified number of minutes and seconds... | |
| duration | Description of time span classes in lubridate. | |
| dst | Get Daylight Savings Time indicator of a date-time. | |
| leap_year | Is a year a leap year? | |
| add_epoch_to_date | Add epochs to dates... | |
| lubridate | Dates and times made easy with lubridate... | |
| is.duration | Is x a duration object? | |
| DateCoercion | Convert every date method we know about to POSIXlt and POSIXct... | |
| with_tz | Get date-time in a different time zone... | |
| is.timespan | Is x a length of time? | |
| new_epoch | Create an epoch object... | |
| make_difftime | Makes a difftime object from a given number of seconds... | |
| hm | Create a period with the specified number of hours and minutes... | |
| is.difftime | Is x a difftime object? | |
| ymd_hms | Parse dates that have hours, minutes, or seconds elements... | |
| month | Get/set months component of a date-time. | |
| is.period | Is x a period object? | |
| int_start | Access and change the start date of an interval... | |
| ceiling_date | Round date-times up. | |
| as.period | Change an object to a period. | |
| second | Get/set seconds component of a date-time. | |
| floor_date | Round date-times down. | |
| is.instant | Is x a date-time object? | |
| ymd | Parse dates according to the order that year, month, and day elements appear... | |
| origin | 1970-01-01 GMT... | |
| sundays | Quickly create common epoch objects... | |
| as.interval | Change an object to an interval. | |
| reclass_date | Convenience method to reclass dates post-modification. | |
| hms | Create a period with the specified hours, minutes, and seconds... | |
| parse_date | Change dates into a POSIXct format... | |
| seconds | Quickly create relative timespans. | |
| force_tz | Replace time zone to create new date-time... | |
| wday | Get/set days component of a date-time. | |
| tz | Get/set time zone component of a date-time. | |
| new_duration | Create a duration object. | |
| int_end | Access and change the end date of an interval... | |
| minute | Get/set minutes component of a date-time. | |
| is.Date | Is x a Date object? | |
| add_dates | Adding date-time objects... | |
| now | The current time... | |
| hour | Get/set hours component of a date-time. | |
| dseconds | Quickly create exact time spans. | |
| am | Does date time occur in the am or pm? | |
| decimal_date | Converts a date to a decimal of its year. | |
| pretty.dates | Computes attractive axis breaks for date-time data... | |
| round_date | Rounding for date-times. | |
| new_difftime | Create a difftime object. | |
| today | The current date... | |
| as.duration | Change an object to a duration (difftime). | |
| DateUpdate | Changes the components of a date object... | |
| lakers | Lakers 2008-2009 basketball data set... | |
| is.interval | Is x an interval object? | |
| year | Get/set years component of a date-time. | |
| new_interval | Create an interval object. | |
| subtract_dates | Subtracting date-time objects... | |
| new_period | Create a period object. | |
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Details
| License | GPL |
| LazyData | true |
| Type | Package |
| Collate | 'accessors-day.r' 'accessors-hour.r' 'accessors-minute.r' 'accessors-misc.r' 'accessors-month.r' 'accessors-second.r' 'accessors-tz.r' 'accessors-week.r' 'accessors-year.r' 'coercion.r' 'durations.r' 'epochs.r' 'help.r' 'intervals.r' 'ops.durations.r' 'parse.r' 'periods.r' 'pretty.r' 'round.r' 'util.r' 'zzz.r' |
| Packaged | 2011-05-11 20:17:05 UTC; garrettgrolemund |
| Repository | CRAN |
| Date/Publication | 2011-05-12 04:27:20 |
| depends | base (>= 2.8) , R (>= 2.8) |
| enhances | chron , fts , its , timeDate , timeSeries , tis , tseries , xts , zoo |
| imports | plyr , stringr |
| suggests | testthat |
| Contributors | Garrett Grolemund, Hadley Wickham |
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